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Here are some of the articles that have been recently posted to the PASSCAL website:

Visitors from Ecuador

Three engineers from the Escuela Politecnica Nacional Ecuador, Instituto Geofísico, spent the first two weeks of May here at PASSCAL. They are planning a network of 63 permanent broadband stations, 25 emergency sites, and 70 accelerometer stations in Ecuador. These stations will be used to monitor volcanic activity and seismic events. Ecuador is home to more than 20 volcanoes, so this is an important undertaking not only for the scientific knowledge it will provide, but also for the safety of the Ecuadoran people.

PASSCAL supports Salton Seismic Imaging Project (SSIP)

Six PASSCAL staff members were in Southern California this March to support the Salton Seismic Imaging Project (SSIP).  The project is funded by NSF through both the MARGINS Program (now GeoPRISMS) and the EarthScope Program, and funded by the U. S. Geological Survey through the Multi-Hazards Demonstration Project.  The project includes researchers from Virginia Tech, Caltech, the USGS, and Mexican partner institutions CICESE and UABC, Mexicali.

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Community Broadband Sensor Repair Policy

ver. 2011093

The PASSCAL Instrument Center (PIC) has historically honored requests to repair community owned broadband seismometers. Significant resources are required to process, evaluate, and repair a broadband instrument. To ensure that we are able to properly administer these requests and that we are offering these services consistently to all members of the IRIS community, the following policy will govern the PASSCAL Instrument Center's handling of these requests.

Trillium Releases Updated Response Files for Trillium 120 and 240

Nanometrics Inc., manufacturer of the Trillium series of broadband sensors, has recently updated the response for Trillium models 120 and 240.

PASSCAL provides these new response files for Antelope in our FTP download area.

A new posting, "Updated Instrument Response for Trillium_120, Trillium_240 (2 Generations) and Taurus", provides information and links to Antelope response files; it is available here.

If you have questions about using these new response files, please contact eliana [at] passcal [dot] nmt [dot] edu (Eliana Arias-Dotson) (data group) or pmiller [at] passcal [dot] nmt [dot] edu ( Pnina Miller) (sensor group).

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Requirements for PASSCAL Passive Experiments (SEED)

Data and format for archiving

In order to accept your passive-source data for archiving please comply with the procedures and standards below. PASSCAL staff are available to assist you with meeting the requirements of archiving your SEED data as stated in the PASSCAL Data Delivery Policy

Regarding the archiving of SEED data, the policy may be summarized in three points:

Raw Data and Meta-Data Required to Archive your Flexible Array Active Source Data Set

Principal investigators of Flexible Array experiments are expected to submit their data and meta-data to the USArray Array Operations Facility located at the PASSCAL Instrument Center as outlined in the Flexible Array data policy.  Archiving the experiment's complete data set at the IRIS DMC fulfills NSF data requirements; simply sending data and meta-data to PASSCAL does not.

We suggest the principle investigators adhere to the following procedure to facilitate efficient data processing and archiving of their Flexible Array RT-130 and RT-125A Texan acquired data.

Differences between Flexible Array and PASSCAL Experiment when archiving

For Flexible Array experiments, the Data Group at IRIS/PASSCAL shares responsabilities with the Principal Investigator(s) for the archiving of their data as with PASSCAL experiments, however instead of the fully processed data in the required format (seed or hdf5) and dataless provided by PI on a PASSCAL Experiment, The PI and his team in a Flexible Array submit all the raw data and information needed to generate the metadata at PASSCAL.

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Shipping Flexible Array Data and Meta-data

Passive Source Data

Before shipping your data, please take a moment to:

Flexible Array Principle Investigator - PASSCAL Archiving Responsibilties

Data Archiving Responsibilities  

Active Source Experiments

Passive Source Experiments

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PH5 Data Flow

PH5 data flow. The left column shows the general process one follows during the preparation of a PH5 data set.  The right side shows the various software tools and files necessary to complete the process.

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